deps: update regex to 1.5.5 due to CVE (#691)

Prompted by the following CVE: https://blog.rust-lang.org/2022/03/08/cve-2022-24713.html

Addresses it by following the recommended fix of updating to 1.5.5.

Cargo.lock

@@ -1307,9 +1307,9 @@ dependencies = [
 
 [[package]]
 name = "regex"
-version = "1.5.4"
+version = "1.5.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d07a8629359eb56f1e2fb1652bb04212c072a87ba68546a04065d525673ac461"
+checksum = "1a11647b6b25ff05a515cb92c365cec08801e83423a235b51e231e1808747286"
 dependencies = [
  "aho-corasick",
  "memchr",

Cargo.toml

@@ -49,7 +49,7 @@ fxhash = "0.2.1"
 indexmap = "1.6.2"
 itertools = "0.10.0"
 once_cell = "1.5.2"
-regex = "1.5.4"
+regex = "1.5.5"
 serde = { version = "1.0.125", features = ["derive"] }
 sysinfo = "0.23.4"
 thiserror = "1.0.24"